Figure 1 | npj Quantum Information

Figure 1

From: Replicating the benefits of Deutschian closed timelike curves without breaking causality

Figure 1

Deutschian timelike curves. (a) depicts a physical visualization of a CTC, where an object entering one mouth of a wormhole at some point tA may jump to a prior time tB (with respect to an chronology respecting observer) and interact with its past self via some unitary U. (b) In the special case where no interaction occurs, we obtain an open timelike curve. This naturally occurs, for example, in instances where the wormhole mouths are spatially separated.

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